CBSE Class 3 Mathematics Revision Worksheet Set 27

Ex -6

*Do sum no 1-16 in book .

Q17) Arrange in Columns and find the sum :
2435 + 132 = 2 4 3 5
                    + 1 3 2
               __________
                    2 5 6 7
               __________   Ans- 2567

22) 1405, 231 , 42 and 11 = 1 4 0 5
                                                2 3 1
                                                   4 2
                                                + 1 1
                                              _______
                                               1 6 8 9
                                             ________   Ans- 1689

*Do sum no 17-24 in maths note book .

Ex -7

*Do sum no 1-16 in book .
Q17) Find the sum :-  1 1 2
1378+ 2659+ 1235 =  1 3 7 8
                                   2 6 5 9
                                + 1 2 3 5
                                ________
                                   5 2 7 2
                                ________  Ans- 5272

                                                  2 2 1  -- carry over
Q23 3874 , 2964 and 3782 =    3 8 7 4
                                                  2 9 6 4
                                                + 3 7 8 2
                                                _________
                                                  10 6 2 0
                                               __________   Ans - 10620

*Do sum no 17-24 in maths note book and also do sum no 25-29 in book .

Ex -8

*Do sum no 1-10 in book .

Fill in the blanks - 1) 2357+1876 = 1876 + 2357 .
Q11) Find the sum by suitable grouping :-
a) 53 + 42 + 47 + 58 ( we can make group for easy working )
= ( 53 + 47 ) + ( 42 + 58 )
= (100 ) + (100 )
= 200
. Ans = 200 .

Question 1. Draw the shapes and use following colours for the edges (lines) use orange colour, faces (sides) use yellow colour and mark the vertex( corners) in black colour.
CUBE CYLINDER CUBOID
Answer:
Here are the three shapes coloured as requested:
- Cube (has 12 orange edges, 6 yellow faces, and 8 black vertices):

- Cylinder (has 2 circular orange edges and 3 yellow faces. It has 0 vertices, so there are no black corners):

- Cuboid (has 12 orange edges, 6 yellow faces, and 8 black vertices):

In simple words: Edges are orange lines. Faces are yellow sides. Vertices are black corner dots. A cylinder has no corners.

Exam Tip: A cylinder has circular edges but no sharp corners. Because of this, it has zero vertices to mark!

Question 2. Draw two examples for the following shapes and name it.
a. Cylinder
b. Cuboid
c. Cone
d. Cube
e. sphere
Answer:
a. Cylinder examples:
- Soda Can:

- Candle:


b. Cuboid examples:
- Book:

- Gift Box:


c. Cone examples:
- Birthday Hat:

- Ice Cream Cone:


d. Cube examples:
- Dice:

- Rubik's Cube:


e. sphere examples:
- Basketball:

- Marble:

In simple words: We can find 3D shapes in real life. Things like soda cans, books, party hats, dice, and balls are examples of these shapes.

Exam Tip: When drawing real-life examples, think of everyday items in your house or classroom that match the shape.